522 and 811 were installed on Monday. I switched from Directv. The picture quality from 522 is much worse than Directv DVR I replaced. The picture from 522 is changing from noisy(kind of pixelization) to clear then back to noisy every second. I don't know if it is software, receiver or signal problem. But my 811 don't have the problem, acturally the 811 picture on SD channels is a little bit better than Directv HD receiver.